Process for making cement.



- an emulsion between a water-pron UNITED STATES EDWARD J. WINSLOW, OF CHICAGO, ILLINOIS.

PATEN OFFICE.

PROCESS FOR MAKING- CEMENT.

Specification 01' Letters Patent.

Application filed. August 17, 1906. Serial No. 831,084.

To all whom it may concern:

Be it known that I, EDWARD J. WINSLOW, residing at Chicago, in the county of Cook and State of Illinois, have invented certain 5 new and useful Improvements in Processes for Making Cement, of which the following is a full, clear, and exact description, such as will enable others skilled in the art to which it a pertains to make and use the same.

's invention relates to water-proof cegents and more particularly it concerns cerain improved methods for imparting su rior water-proofing qualities to ordinary ydraulic cement, such as Portland cement.

While this invention is not to be limited to the following reoise embodiments, it will be which is particularly ada ted for being employed m a water-proo capacity, and which will permanently retain its original desirable properties.

As tending to render better understood the essentials of this invention, it may be preliminarily stated that much difiiculty has heretofore been ex erienced in producing a cement which, wh' e of a thoroughly waterproof nature after setting, will at the same 40 time be sufiiciently absorbent prior to setting to permit of a ready initial mixing with water. Previous attempts have resulted in a -oement which either does not possess full "setting owers, or which is insufficiently 4.5 waterroo after setting. Another difficulty t at has been encountered in the cements of the prior art, resides in the fact that such cements rapidly deteriorate by exposure to damp air.

In carrying out the preferred embodiments of this invention, I preliminaril prepare a water-proofing compound whic is peculiarly adapted for being incorporated into the cement to be given water-proofing) qualities. Such compound may be prepared y forming W mi I such as wax or other oleaglinous substances, 5 i and a sul'ta'bl'e reactlve gen or carr er w c 1 may consist of "a'if'alkfifilsuofi asiivdrated lime or the like. To this end, 1W

mboil hydrated lime with water and y solution pre er 0 mtro into such duce a suitable wax, such as Ja an wax. While various pro ortions of these mgreclients are contemp ated, I prefer in practice to use two parts of the hydrated lime to one part of the Ja an wax or other oleaginous substance. T e wthus prepared is then boiled to a the as e and then dried in a suitable man o tliis en various W 7 means may e employed, such as a filterpress, centrifugal or vacuum driers, and after the excess has been removed, the partially dried paste may be further dried b T spreading on the floor or other sur ace and heating gently if desired. The mass thus roducede is then preferably reduced to a ow er and is now available for the purpose of imparting water-proofing qualities to such types of ordinarycement as may be preferred. This Wogfinfijowderandthe method 0 ma g t e same wilfbi? made the sub ect of a divisional application for patent and is therefore not specifically claimed herein, but is described to render this disclosure more com lete.

though the aforesaid novel water-proofing compound may be incorporated into an ordinar cement in divers ways, with more or less advantage, I will now state the manner in which I preferably carry out this part of my invention, inasmuch as it is believed to represent a very substantial improvement in the art and result in a articularl excellent water-proof cement. doing t is, I inti-l matel mix the cement and the waterroo -I H mt or es x mgu wet 0 am r n ng heretofore characteristifififc zam h ttempts dry grmdmg may be done in any apparatus suitable for the pur ose, and in praci tice I intimately comming e in this way the ingredients in the pro ortions ofjapproximately'98% of a-good are obtained by thoroughly grinding the ingredients into a ve intimfate assoplatlon 110 byfprolon g the din or near y two hours, Al t r the gri h d ing as continued for a, gfbfliicieasatistactarxw m reef-cement 1100/ h grade Portland cement with about 2 of the aforesaid wa-r )9 g;

fer-r00 an IE Ii certain cases, very beneficial results icall improve the requisite period, it will be found that a ve superior product is obtained, and one which to an extraordinary degree possesses water-proofing properties. It has been found by long time commercial ex eriments that a cement, roduced either in t iis specifmamier or otherwise within the road terms of this invention, may be applied and thereafter freely exposed to a moist atmosphere without undergoing any material deterioration, while at the same time, such cement may be very readily mixed with water preparatory for use. When d and after setting, such cement is not 0 y water-proof, but furthermore has the very valuable capacity for permanently retaining colors im arted to it during the process of manu acture. Moreover, its stren th has been in no wise materially impaire by this treatment, and in many cases tests have actually shown a slight improvement in this respect.

A cement repared as above is well suited to withstan long ocean shipments without special precautions, which is a questionable ossibilrty with such ordinary cements as have heretofore been made.

The terms I have adopted in disclosing my invention have been em loyed in an lllustrative rather than in a efinitive sense, and accordingly I desire that the same shall be interpreted with the full range of equivalency to which I am rightly entitled, and to this end, such other specificsubstances and analogous processes as my disclosure will naturall suggest in the light of current knowle ge to those skilled in the art as available for producing like results, are to be regarded as at least representin embodiments of the generic features of t 's invention, although the special advantages characteristic of the more intense aspect of my invention may not be fully attained.

I claim:

1. The process of preparing a relatively water roof cement consisting in dry grin ing pu verulent cement with an anhydrous water proofing comfiplund composed in part of an inorganic alka e agent.

2. The process of preparing a relatively water proof cement consisting in dry grin ing cementitious material with a relatively small quantity of a suitable water proofing agent.

3. The process of preparing a relatively water proof cement consisting in intimately mixing a dry pulverulent cement with a relatively small uantity of a dry pulverulent water proofing compound containing about 2 parts of hme and 1 part of an oleaginous substance.

4. The process of preparing a relatively water proof cement consisting in intimately mixing a dry pulverulent cement with approximately two per cent. of a dry pulverulent water proofing com ound composed of lime and an oleaginous su stance.

5. The process of preparing a relatively water proof cement consisting in dry grinding a pulverulent cement and a relatively small quantity of a water roofing compound composed largely of hy rated lime.

6. The process of preparing a relativelv water roof cement consisting in dry grin ing pu verulent cement with approximately two per cent. of an anhydrous water proofing compound.

7. The process of preparing a relativel' water proof cement consisting in dry grin ing cementitious material with a water proofing agent containing an oleaginous substance.

8. The process of preparing a relative water proof cement consisting in mechanic-F ally mixing a dry pulverulent cement with a r r pulverulent water proofing compound containing an oleaginous substance.

9. The process of preparing a relativel water proof cement OOIlSlStlD" in dry grin ing a pulverulent cement an a ulverulent water proofin compound containing about 1 part of an o eaginous substance and about 2 parts of hydrated lime.

10. The rocess of preparing a relatively water proo cement consisting in dry grinding cementitious material with a relatively small quantity of a water proofing agent containing a wax.

11. The process of preparing a relatively water proo cement consisting in intimately mixing a dry pulverulent cement with a relatively small quantity of a dry pulverulent water roofing compound containing a wax.

12. he process of preparing a relatively water proo cement consisting in dry grinding cementitious material with approximately two per cent. of a suitable water proofing compound containing an oleaginous substance.

13. The rocess of preparing a relatively water proof cement consisting in intimately mixing a dry pulverulent cement with approximately two per cent. of a dry pulveruent water proofing compound contaming an oleaginous substance.

14. The rocess of preparing a relatively water proo cement consisting in dry grinding a pulverulent cement with a relatively small quantit of a pulverulent Water proofing compoun containing an oleaginous substance.

15. The rocess of preparing a relatively water proof cement consisting in dry grinding a pulverulent cement with approximately two per cent. of a pulverulent water proofing compound containing an oleaginous substance and lime.

16. The process of preparing a relatively water proo cement consisting in dry grinding a pulverulent cement with a pulverulent 106. COMPOSITIONS,

COATING OR PLASTIC.

water proofing compound containing wax and lime.

17. The process of preparing a relatively water proo cement consisting in dry grinding a pulverulent cement with a pulverulent water proofing compound contaming Japan wax and lime.

r- 18. The rocess of preparing a relatively water proof cement consisting in dry grinding a pulverulentcement with a pulverulent water proofing com ound containing approximately one part of gapan wax with two parts of lime.

19. The rocess of preparing a relatively water proo cement consisting in first making a boiling solution of approximately two parts of hydrated lime, intimately introducing into said hot solution approximately one part of Japan wax, boiling or agitating said mixture until a complete emulsion results, then drying said emulsion and rendering pulverulent Examiner.

EDWARD J. WINSLOW.

Witnesses:

C. H. WILSON, ALBERT F. NATHAN. 

